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Decimals Worksheet for Maths Olympiad Class 5

Maths Olympiad topic 10: Decimals and place value · Set 650 · 40 questions
TalentJR

How to solve it (Same number of places): Add zeros at the end so every decimal has the same number of places (0.5 = 0.500). Compare or add them like whole numbers, keeping the decimal points in a line. Place value after the point: tenths (0.1), hundredths (0.01), thousandths (0.001).

NameDateTime takenScore ___ / 40
  1. 1.6.34 + 9.1 = ? (a) 7.25 (b) 15.34 (c) 15.44 (d) 15.54
  2. 2.Which is the greatest: 0.55, 0.425, 0.095, 0.5? (a) 0.55 (b) 0.425 (c) 0.095 (d) 0.5
  3. 3.8.31 + 6.1 = ? (a) 14.41 (b) 14.31 (c) 8.92 (d) 14.51
  4. 4.What is the value of the digit 4 in 82.416? (a) 0.04 (b) 4 (c) 0.004 (d) 0.4
  5. 5.3.53 + 2.9 = ? (a) 6.43 (b) 6.33 (c) 3.82 (d) 6.53
  6. 6.Which is the greatest: 0.8, 0.727, 0.069, 0.82? (a) 0.8 (b) 0.727 (c) 0.069 (d) 0.82
  7. 7.7.67 + 7.5 = ? (a) 15.07 (b) 15.17 (c) 15.27 (d) 8.42
  8. 8.What is the value of the digit 1 in 21.753? (a) 0.1 (b) 10 (c) 0.01 (d) 1
  9. 9.Which is the smallest: 0.044, 0.417, 0.59, 0.5? (a) 0.044 (b) 0.417 (c) 0.59 (d) 0.5
  10. 10.What is the value of the digit 7 in 37.521? (a) 0.7 (b) 70 (c) 0.07 (d) 7
  11. 11.What is the value of the digit 4 in 45.721? (a) 0.04 (b) 4 (c) 40 (d) 0.4
  12. 12.Which is the greatest: 0.6, 0.61, 0.598, 0.078? (a) 0.6 (b) 0.61 (c) 0.598 (d) 0.078
  13. 13.Which is the greatest: 0.117, 0.27, 0.2, 0.093? (a) 0.117 (b) 0.27 (c) 0.2 (d) 0.093
  14. 14.Which is the greatest: 0.033, 0.74, 0.7, 0.623? (a) 0.033 (b) 0.74 (c) 0.7 (d) 0.623
  15. 15.What is the value of the digit 4 in 42.156? (a) 40 (b) 0.4 (c) 0.04 (d) 4
  16. 16.What is the value of the digit 5 in 15.398? (a) 5 (b) 50 (c) 0.05 (d) 0.5
  17. 17.6.57 + 8.4 = ? (a) 15.07 (b) 7.41 (c) 14.87 (d) 14.97
  18. 18.Which is the smallest: 0.22, 0.2, 0.088, 0.183? (a) 0.22 (b) 0.2 (c) 0.088 (d) 0.183
  19. 19.8.94 + 3.4 = ? (a) 12.44 (b) 9.28 (c) 12.24 (d) 12.34
  20. 20.Which is the greatest: 0.52, 0.5, 0.052, 0.445? (a) 0.52 (b) 0.5 (c) 0.052 (d) 0.445
  21. 21.1.77 + 5.5 = ? (a) 7.37 (b) 2.32 (c) 7.27 (d) 7.17
  22. 22.Which is the greatest: 0.33, 0.3, 0.222, 0.014? (a) 0.33 (b) 0.3 (c) 0.222 (d) 0.014
  23. 23.1.82 + 2.9 = ? (a) 4.62 (b) 4.82 (c) 2.11 (d) 4.72
  24. 24.3.51 + 6.6 = ? (a) 4.17 (b) 10.21 (c) 10.01 (d) 10.11
  25. 25.Which is the greatest: 0.063, 0.8, 0.89, 0.779? (a) 0.063 (b) 0.8 (c) 0.89 (d) 0.779
  26. 26.7.99 + 3.6 = ? (a) 8.35 (b) 11.69 (c) 11.49 (d) 11.59
  27. 27.6.09 + 2.4 = ? (a) 8.39 (b) 6.33 (c) 8.49 (d) 8.59
  28. 28.What is the value of the digit 4 in 62.347? (a) 0.04 (b) 4 (c) 0.4 (d) 0.004
  29. 29.2.34 + 1.6 = ? (a) 3.84 (b) 4.04 (c) 3.94 (d) 2.5
  30. 30.What is the value of the digit 2 in 21.567? (a) 0.02 (b) 0.2 (c) 20 (d) 2
  31. 31.What is the value of the digit 8 in 83.729? (a) 80 (b) 0.8 (c) 0.08 (d) 8
  32. 32.What is the value of the digit 4 in 41.269? (a) 4 (b) 0.4 (c) 40 (d) 0.04
  33. 33.What is the value of the digit 7 in 25.791? (a) 0.07 (b) 0.7 (c) 7 (d) 0.007
  34. 34.Which is the greatest: 0.043, 0.55, 0.472, 0.5? (a) 0.043 (b) 0.55 (c) 0.472 (d) 0.5
  35. 35.What is the value of the digit 4 in 58.234? (a) 0.04 (b) 0.4 (c) 4 (d) 0.004
  36. 36.Which is the greatest: 0.511, 0.6, 0.089, 0.67? (a) 0.511 (b) 0.6 (c) 0.089 (d) 0.67
  37. 37.What is the value of the digit 1 in 29.817? (a) 0.001 (b) 0.1 (c) 1 (d) 0.01
  38. 38.5.99 + 1.8 = ? (a) 7.79 (b) 7.89 (c) 7.69 (d) 6.17
  39. 39.5.94 + 2.1 = ? (a) 8.04 (b) 8.14 (c) 7.94 (d) 6.15
  40. 40.What is the value of the digit 6 in 18.963? (a) 6 (b) 0.06 (c) 0.6 (d) 0.006

Answer key

  1. 15.44
  2. 0.55
  3. 14.41
  4. 0.4
  5. 6.43
  6. 0.82
  7. 15.17
  8. 1
  9. 0.044
  10. 7
  11. 40
  12. 0.61
  13. 0.27
  14. 0.74
  15. 40
  16. 5
  17. 14.97
  18. 0.088
  19. 12.34
  20. 0.52
  21. 7.27
  22. 0.33
  23. 4.72
  24. 10.11
  25. 0.89
  26. 11.59
  27. 8.49
  28. 0.04
  29. 3.94
  30. 20
  31. 80
  32. 40
  33. 0.7
  34. 0.55
  35. 0.004
  36. 0.67
  37. 0.01
  38. 7.79
  39. 8.04
  40. 0.06

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